Track-brake.



No. 816,531. PATENTED MAR. 27, 1906. J. M. 800L511. TRAGK BRAKE.

APPLIUATIOH mum mm: 1,1905

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INFENTOR.

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} PATBNTBD MAR. 27, 1906. J. M. COOK, Jx.

TRASK BRAKE.

mien-m: FILED EUR}; 1, 1905,

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WITNESSES.

IN! 'ENTOR amae .11. 000/11)? ATT Ei'.

UNITED STATES PATENT OFFICE.

JAMES M. COOK, JR, OF JOHNSTGWN, PENNSYLVANIA.

TRACK-BRAKE.

Specification of Letters Patent.

Patented March 27, 1906.

Application filed June 7, 1905. Serial l lo; ill-L072.

Brakes and I do hereby declare the fellow ing to be a full, clear andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to railway-brakes of the class known astrack-brakes, and more especially to the manner of mounting the I 5brake-bars and to the means for operating the same.

It has for its object to provide one or more brake-bars which aremounted adiacent to the track-rails upon guides or ways whereby a.lateral movement only is permitted the same and to provide means foroperatin the laterally-moving brake-bars from a coal point to press themagainst the sides of the car-whee s.

2 5 Other im rovements in the details of construction W1 1 be madeevident as the description proceeds.

In the operation of mines it is common practice tu I 7:. Ks and carshavin no.in ividual means for retar g their motion. In order to controlthe move ffifi'f'i such cars, it becomes necessary to providetraclc-brakes or equivalent devices at certain places, such as inclines,weighing- 3 5 platforms, tipples, &c.

rakes for the purpose have been devised in which one or more brake-hersare mounted parallel with the track rails and connected with the trackstructure by means of a pluo rality of parallel links which give thebrakebars a lsterel longitudinal movement when operated, whereby theymay be pressed against the sides of the car-wheels. Such e constructionis objectionable in that the 5 brake is either opposed or assisted inits action, dependent upon the direction of the inclinetion of theconneeti -links relative to the moving car. The bra e is therefore lessuniform in its action and more difficult to control.

My invention very eflectivel overcomes the above objections, since t emovable brake-bars have lateral movement only and are thus not effectedin their operation by 5 5 the movement of the car.

As herein shown, the embodiment of my Hcretofor'e track invention is eseciell applicable to cars in which the whee ie run oose on the axles, asis common in mine-cars; but it may be readily adapted to cars in whichthe wheels are secured to the axles and the axles run in boxes carriedby the cars, which construction is elso common in e variety of cars.

forming e part hereof, in which like charactors of reference designatelike parts, Figure 1 is a top plan view of a portion of track, showingthe application of my invention, the shield between the stationarybrake-bars being removed to show the operating means. Fig. 2 is atransverse sectional elevation, on an enlarged scale of the trackstructure, taken on aplane indicated byline II II of Fig. 1, showing acar in osition on the track and the ap lication and operation of myinvention. ig. 3 is a, transverse sectional elevetion of the trackstructure, taken on a :lane indicated by the line III III of Fig. 1, srowing the connections between the hand-wheel and the operating-rod.Fig. 4 is a. fragmenta top plan view of a. air of brake-bars an theoperating-rod, sliowing one of the bell crank levers and its connectinglink. ,Fig. 5 is a fragmentary side elevation of the operatin -rod,sshowin the means for con necting 51c bell-crank levers thereto. Fig. 6is a. fragmentary side elevation of the track structure, showin one ofthe movable brokebars and a guide herefor.

In the drawings, 1 designates the track structure, which may be oi theusual or any desired form, having the door 2, upon which are mounted therails 3, forming the track. Secured to the floor between the rails andextending a suitable distance shove the same end parallel therewith arethe inside or stationary brake-bars 4, which are so located relative tothe raiis, respectively, that the On t e opposite sides 0 e rails arelocated the outside or movable brake-bars 5, which are mounted uponuides 6, resting u on the track structure and secured to the nor bymeans of cleats 7, as shown inFig. 5. These brake-bars extendparall'elfwith the stationary ones and above the rails a correspondingdistance so that the rims of the wheels may be received between them.All of the bars are inclined away from the rails at the ends towardwhich the ears approach to prevent the possibility of their being struckby the wheels.

flan es of the wheels ins? gass between them. 7

Referring to the eccoinpanyin drawings,

Secured to the stationary brake-bars 4 and received in openings in thefloor are brackets 8, which carry bell-crank lovers 9, one arm of eachof which is connected with the adjacent 5 movable brake-bar by means ofa link 10. These links pass under the rails in openings in the floorandare preferably mounted upon suitable wearing-plates 11, wherebyadditional support for the brake-bars is provided. In order that themovable brake-bars may be ad 'usted relative to the links, slots 12 areprovided in the latter, through which pass the bolts for securing thebrakabars thereto. Brackets 13, integral with the links, serve to I 5prevent the brake-bars from slipping on the inks, while the wedgesbetween the brackets and the brake-bars render the latter still ad-'ustable. Either or both the brake-bars may e made of any desiredmaterial, but prefer- 2o ably of wood, as herein shown, and when so mademetal shoes 14 are secured to their inner faces and adapted to contactwith the sides of the car-wheels, as shown in Fig. 2, whereby the lifeof the bars is prolon ed. From the above description it wilI readily beseen that by operating the bell-crank le-' vers the movable brake-barsmay be moved toward and away from the rails, and conseuently may bepressed against the sides of t e car-wheels or released therefrom atwill. In order that the brake-bars may have a par allel motion, theoperating-arms of the bellcrank levers 9 are moved simultaneously by anoperating-rod 15, connected therewith by 3 5 means of pins 16, whicharms are received between the rod and an offset plate 17 securedthereto. The pins are thus supported at both ends. Since oneoperating-rod serves for both sets of bell-crank levers, which areoppositely disposed, slots are provided in the operating-arms for thepins to compensate for the radial movement of the arms. The

operatingrod slides upon wearing-plates 18,

secured to the floor, and is held in alinement by staples or othersuitable means. It is connected at one end to the arm of a sectorgear19, mounted upon the track structure,

y means of a connecting-link 20. This sectorear is adapted to beoperated by means 5 of a land-wheel 21, geared thereto by means of thebevel-gears 22 and 23 and the spur ear 24 and mounted in convenientposition or the operator upon a suitable support.

The hand-wheel is provided with a pawl and ratchet 25, so that the brakemay be set permanently when desired. A shield 26 may be secured to thestationary brake-bars to protect the operating means from obstructionswhich would prevent its proper operation.

As above noted, the brake is designed for use in connection with cars inwhich at least one wheel is loose on the axle, the lay on the axlepermitting the wheels to be c amped between the brake-bars. In case itis desired to use the brake in connection with cars having wheelssecured to the axle it will only be necessary to mount the insidebrake-bars so that they may be given a slight lateral movement insteadof making them rigid. 7o

It is thought that the elasticity of the operating means will besufficient to compensate for wheels of slightly-different widths. If,however, it is not enough or the width of the wheels vary greatly,additional yielding means, as springs or the like, may be interposed ata suitable place between the movable brake-bar and its operatin means.

The operation of the brake, it is thought, will be readil understoodwithout further description. by turning the hand-wheel in the properdirection the outer movable brakebars are drawn to ether and made topress upon the car-whee s, clamping them against the stationary brakebar. The brake is neither opposed nor assisted in its action by themomentum of the cars, thus making it more uniform in its operation, andhence more easily controlled.

It is evident that my invention may be modified in many ways which willnot depart from the spirit thereof. Hence it is not the desire orintention to limit this a plication to the precise construction herein 5iown, but to have it interpreted as broadly as is consistent 95 with theinvention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a track-brake, the combination with loo the car-wheels, of astationary brake-bar on one side of the track-rail, a laterally-movablebrake-bar on the other side of said track-rail, means for holding saidlaterallymovable brake bar against longitudinal movement, to 5 and meansfor operating said movable brakebar to press it a ainst the car-wheels.

2. In a trackrake, the combination with the traekrail and thecar-wheels, of a sta tionary brake-bar on one side of said track- 11rail, a brake-bar on the other side of said traekrail movable along aline at a right angle with said track-rail, and means for operating saidmovable brake-bar to press it against the car-Wheels.

3. In a track-brake, the combination with the track-rail and thecar-wheels, of a sta tionary brake-bar on one side of said trackrail, amovable brake-bar on the other side of said track-rail, guides forsaidmovable brake- I 2 bar located at right angles with the track-rail, andmeans for operatin said movable brakebar to press it a ainst t ecar-wheels.

4. In a track brake, the combination with the track-rail and thecar-wheels, of a brake- 5 bar on each side of the track-rail, a linkconnection between said brake-bars, and means for operating saidconnection to clamp the ear-wheels between said brake-bars.

5. In a track-brake, the combination with 13 the traok'rail and theear-wheels, of a stationary brake-bar on one side of the treokrail, amovable brake-bar on the opposite side thereof, a lever carried by saidstationary brake-bar and connected with said movable one, and means foroperating said lever to clamp the car-wheels between said brakebars.

6. In a track-brake, the combination with the track-rail end theoar-wheels, of a stationary brske bar, located on the inside of thetrack-rail, a movable brake-bar located on the outside thereof, guidesfor said moveble brake-bar, bell-orank levers carried by said stationarybrake-bar, links connecting said levers with said movable brake-leer, arod connecting said levers, and means for operatin said rod to clamp thecanwheels between said brake-oars.

7. In as track-brake, thecombination with the track-rails and thecar-wheels, of stationary brake-bars located on the inside of thetrack-rails, movable broke-bars located on the outside thereof, guidesor said movable brake-oars located at right angles with the track-rails,bell-crank levers mounted upon said stationary brake-bars, linksconnecting said levers with said movable brake-bars, wearing-Plates forsaid links, a rod connectin sai evers, e sector-gear connected withSitid rod, and a hand-wheel geared with said sector-gear.

In testimony whereof I hereto afiix my signature in the presence of twowitnesses.

- JAMES Iii COOK, JR.

Witnesses:

ELMER SEAVEY,

CHAS. N. CHAMBERS.

